JPH09270967A - Broadcasting reception device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To precisely display partial on-screen display at a prescribed position, by adding a pseudo video to a letter box area for handling wide broadcasting as regular broadcasting and stopping an automatic wide function by means of the pseudo video in a broadcasting reception device. SOLUTION: When the received television broadcasting is the wide broadcasting of screen constitution 51 in a letter box system, which accompanies non- picture parts 53 at upper and lower parts, and when it is at the display mode of the partial on-screen display 55 of the channel number, a control means in the device controls a screen generation means having an on-screen display function, generates and adds gray pseudo videos 56 on the upper and lower non-picture parts 53. Then, the control means judges received television broadcasting as the regular broadcasting of screen constitution 52, whose aspect ratio is four to three. Thus, the control means consequently stops the automatic wide function and displays data on the wide screen 54 as screen constitution 52, as it is.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast receiving apparatus that receives a television broadcast (mainly digital broadcast) broadcast via satellite, cable or terrestrial wave, and has a wide display screen with an aspect ratio of 16: 9. The present invention relates to a broadcast receiving device which is a screen, and more particularly to a technique of interrelation processing between an auto wide function and a partial on-screen display in the case of wide broadcast.

[0002]

2. Description of the Related Art In recent years, broadcast receivers for digital broadcasts are increasingly performing wide broadcasts for broadcasting wide screen images having an aspect ratio of 16: 9.
As shown in FIG. 7A, a letterbox format wide broadcast screen configuration 51 shown by an inner rectangle is compared with a normal broadcast screen configuration 52 having an aspect ratio of 4: 3 shown by an outer rectangle. , A non-image part 53 with no video signal at the top and bottom
The state is accompanied by (shown by hatching).
In the broadcast receiving device, the output of the video terminal is vertically
The screen structure 51 of the wide broadcast accompanying 3 is provided. In a broadcast receiving device (wide television) having a wide screen, shape change conversion processing is performed based on detection of the non-picture portion 53, and a wide screen 54 having an aspect ratio of 16: 9 shown in FIG. 7B is displayed. I'm just trying to fit.

In digital broadcasting, the number of channels is very large, and three-digit numbers from "100" to "999" are used. When the channel number 55 is displayed on the screen, it is generally displayed in the upper right corner of the screen as shown in FIG. The channel number 55 is generated by the on-screen display (OSD) process and displayed in the upper right corner of the screen. In addition to this, in the display of icons and messages, partial on-screen display occupying only part of the screen may be performed.

[0004]

By the way, when the screen 56 shown in FIG. 8 is a normal screen having an aspect ratio of 4: 3, a model that performs the above-mentioned on-screen display processing is shown in FIG. 9 (a). As shown, when the received television broadcast is a wide broadcast with the non-picture part 53 at the top and bottom,
If the on-screen display process of the channel number 55 is performed in the same manner as for the normal screen 56 having the aspect ratio of 4: 3, the above-mentioned drawing which should be matched with the wide broadcast screen configuration 51 from the wide broadcast screen configuration 51 on the broadcast receiving device side. When the auto wide process, which is the screen configuration conversion process from 7 (a) to 7 (b), is performed, part or all of the channel number 55a exceeds the wide screen 54, as indicated by the reference numeral 55a in FIG. 9 (b). This may cause a malfunction of the auto wide function that the image is not displayed at the correct position in the upper right corner of the screen.

An object of the present invention is to prevent the malfunction of the auto wide function for displaying the partial on-screen display such as the channel number, and to display the partial on-screen display correctly at a predetermined position.

[0006]

The broadcast receiving apparatus according to the present invention handles a wide broadcast as a normal broadcast when the received television broadcast is a letterbox type wide screen and is in a partial on-screen display mode. A pseudo image is added to the letterbox area to stop the auto wide function in the broadcast receiving device, or the partial on-screen display does not run off the wide screen when the auto wide processing is performed. Since it is moved to the wide broadcast image area in advance, the partial on-screen display can be displayed at a predetermined correct position on the wide screen.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A broadcast receiving apparatus according to claim 1 of the present invention provides a non-image display when a received television broadcast is a letter box format wide screen with a non-image portion and is in a partial on-screen display mode. It is characterized in that the auto wide function in the display device is stopped by providing a means for generating and adding a pseudo image to the partial area. The wide broadcast after adding the pseudo image is regarded as the same as the normal broadcast and is displayed on the wide screen as it is without performing the auto wide processing, and the partial on-screen display is normally generated with the aspect ratio of 4: 3. Even if you go in the same way as for broadcasting,
The partial on-screen display is not affected by the malfunction of the auto wide function and is displayed at a predetermined correct position on the wide screen.

The broadcast receiving apparatus according to claim 2 of the present invention is
In the above-mentioned claim 1, there is provided means for stopping the generation of the pseudo image when the partial on-screen display mode is released. When it is not necessary to display the partial on-screen display, the pseudo video is erased, so the wide broadcast, which was considered as a normal broadcast until then, is recognized as a wide broadcast as it should be, and the wide broadcast is processed by the auto wide process. Will fit on a wide screen.

The broadcast receiving apparatus according to claim 3 of the present invention is
When the received television broadcast is a letterbox type wide screen with no image part and is in the partial on-screen display mode, a means for moving the generation position of the partial on-screen display to the area of the video signal of the wide broadcast is provided. It is characterized by having. Since the partial on-screen display moves into the wide broadcast video area, if the auto wide processing is performed as it is, the partial on-screen display will be displayed at a predetermined correct position on the wide screen. This movement is not performed during normal broadcasting, so the partial on-screen display is displayed in the corner of the screen with an aspect ratio of 4: 3.
Does not block the screen.

Embodiments of a broadcast receiving apparatus according to the present invention will be described below in detail with reference to the drawings.

[First Embodiment] FIG. 1 is a block diagram showing a schematic configuration of a digital broadcast receiving apparatus according to a first embodiment. In FIG. 1, reference numeral 1 is a receiving means including a tuner section and tuning / demodulating means for receiving a broadcast, 2 is a demultiplexing means for extracting a video signal, an audio signal and program information from the received broadcast signal, and 3 is a video signal and an audio signal. A video / audio reproducing means for decoding a signal, a control means 4 having a function of controlling each part of the apparatus to perform information processing and assisting a user in selecting a program or a channel, and a storage means 5 for temporarily storing information. , 6 is a remote control device, 7 is a remote control receiver that receives a remote control signal, decodes it, and passes it to the control means 4,
8 is a screen generating means for generating an on-screen display (OSD), 9 is a synthesizing means for superimposing the on-screen display with respect to a video signal, and 10 is a displaying means such as a CRT.

When the channel display key is operated in the remote control device 6, the operation signal is received by the remote control receiving section 7, decoded and given to the control means 4. The control means 4 controls the screen generation means 8 that performs on-screen display processing to generate the video data of the channel number of the channel currently being received, superimposes it on the video signal via the synthesis means 9, and displays it. The channel number is displayed at the upper right corner of the screen of the means 10. Of course, in addition to the channel number, various partial on-screen displays such as icons and message displays are displayed by other appropriate operations.

The control means 4 also has the following correction function for the malfunction of the auto wide function. FIG.
As shown in (a), when the received television broadcast is the wide broadcast of the letterbox format screen configuration 51 with the non-display part 53 at the top and bottom, and the display mode of the partial on-screen display 55 such as the channel number is set. If it is, the control means 4 controls the screen generation means 8 having an on-screen display function to generate and add, for example, a gray pseudo image 56 to the upper and lower non-image areas 53. Then, the control means 4 determines that the received television broadcast is a normal broadcast of the screen configuration 52 with the aspect ratio of 4: 3, and as a result, the control means 4 stops the auto wide function, and FIG. As shown in, the wide screen 54 is displayed with the screen configuration 52 having the aspect ratio of 4: 3. Then, the partial on-screen display 55 such as the channel number is not affected by the malfunction of the auto wide function, and is displayed at a predetermined correct position in the upper right corner of the wide screen 54.

Whether or not it is the wide screen of the letter box format with the non-picture part is included in the program information of the wide broadcast. The pseudo image 56 is displayed in the upper and lower areas of the wide screen 54.

The above operation will be described with reference to the flow charts of FIGS. It is determined whether the received television broadcast is a letterbox format wide screen (step S1). If the received television broadcast is a letterbox format wide screen with a non-image portion 53, then a partial on-screen display 55 is performed.
Is determined to be the mode for displaying (step S
2) If it is not in that mode, auto wide processing is executed (step S3). The auto wide processing is executed even in the case of normal broadcasting without the non-image portion 53.

In the mode for displaying the partial on-screen display 55, a gray pseudo image 56, for example, is generated and added to the upper and lower non-image areas 53 by the screen generating means 8 having an on-screen display function. Yes (step S4). Next, it is determined whether the aspect ratio is 4: 3 using a part of the auto wide processing (step S5). If the aspect ratio is determined to be 16: 9, the brightness of the pseudo image 56 is insufficient. Therefore, the brightness of the pseudo image 56 is increased by one step in the screen generation means 8 (step S6), and the process returns to step S4. When it is determined that the aspect ratio has become 4: 3, the auto wide function is stopped and the wide broadcast is displayed as it is as a normal broadcast (step S7). Then, the partial on-screen display 55 is generated and superposed and displayed on the received video signal (step S8). As a result, FIG.
As described above, the partial on-screen display 55 such as the channel number is not affected by the malfunction of the auto wide function, and is displayed at a predetermined correct position in the upper right corner of the wide screen 54.

The steps S5 to S6 may be omitted, and a fixed pseudo image having sufficient brightness predetermined in step S4 may be added.

As a next step, it is judged whether or not the display mode of the partial on-screen display 55 is canceled (step S9), and if the mode is maintained, the process returns to step S7, but the partial on-screen display mode is changed. When it is released, the generation of the partial on-screen display 55 by the screen generation means 8 is stopped (step S10), the generation of the pseudo video 56 by the screen generation means 8 is stopped (step S11), and the auto wide process is executed. (Step S12). As a result, as shown in FIG. 2 (c), the wide broadcast is converted into a state in which it fits within the wide screen 54. The partial on-screen display 55 and the upper and lower pseudo images 56 disappear from the wide screen 54.

[Embodiment 2] The control means 4 in the broadcast receiving apparatus for digital broadcasting of Embodiment 2 has the following correction function for the malfunction of the auto wide function. As in the case of the first embodiment, the received television broadcast has a screen configuration 5 with a non-image portion 53 at the top and bottom as shown in FIG.
In the case of the wide broadcast of 1 and in the display mode of the partial on-screen display 55, the control means 4 controls the screen generating means 8 having an on-screen display function to display the partial on-screen display 55. As shown in FIG. 5A, the generation position is moved from the area of the non-image part 53 to the area of the video signal of wide broadcast, that is, to the upper right corner of the screen configuration 51. Then, if the auto wide processing is executed as it is, the wide broadcast is displayed in a state that it fits exactly on the wide screen 54 with the aspect ratio of 16: 9 as shown in FIG. Is displayed at a predetermined correct position in the upper right corner of the wide screen 54 without being affected by the malfunction of the auto wide function.

The above operation will be described with reference to the flowchart of FIG. It is determined whether the received television broadcast is a letterbox wide screen with the non-picture portion 53 (step S21). If the received television broadcast is a letterbox wide screen, the partial on-screen display 55 is subsequently displayed. It is determined whether or not the mode is set (step S2
2) If it is not in that mode, the auto wide process is executed (step S24). The auto wide processing is executed even in the case of normal broadcasting without the non-image portion 53.

In the mode for displaying the partial on-screen display 55, the partial on-screen display 5 is generated by the screen generating means 8 having an on-screen display function.
The generation position of No. 5 is moved from the area of the non-picture portion 53 to the area of the video signal of the wide broadcast (step S23). Then, the auto wide processing is executed as usual (step S
24). In the case of the second embodiment, the automatic wide function is not stopped. In addition, when the display mode of the partial on-screen display is canceled, the partial on-screen display 55 simply disappears.

In each of the above embodiments, the channel number is described as an example of partial on-screen display, but the present invention can be applied to other displays such as icons and message displays in the same manner.

[0023]

The broadcast receiving apparatus according to the present invention handles the wide broadcast as a normal broadcast when the received television broadcast is the letterbox type wide screen and is in the partial on-screen display mode. Since the pseudo wide image is added to the area and the auto wide function is stopped by this, or in the wide broadcast image area in advance so that the partial on-screen display does not protrude from the wide screen when the auto wide processing is performed. Since it is moved, the partial on-screen display can be displayed at a predetermined correct position on the wide screen. Further, when the partial on-screen display mode is released, the auto wide processing is started, so that the wide broadcast can be exactly fit into the wide screen as it should be.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a broadcast receiving device according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a partial on-screen display (channel number) display process in wide broadcast in the first embodiment.

FIG. 3 is a flowchart illustrating the operation of the first embodiment.

FIG. 4 is a flowchart (continuation of FIG. 3) illustrating the operation of the first embodiment.

FIG. 5 is an explanatory diagram of partial on-screen display processing on a wide screen according to the second embodiment.

FIG. 6 is a flowchart illustrating the operation of the second embodiment.

FIG. 7 is an explanatory diagram of a partial on-screen display process in wide broadcast in the case of a conventional technique.

FIG. 8 is an explanatory diagram of a display state of partial on-screen display on a normal screen with an aspect ratio of 4: 3.

FIG. 9 is an explanatory diagram of an auto wide function malfunction that occurs in the partial on-screen display processing in wide broadcast in the case of the conventional technique.

[Explanation of symbols]

 1 ... Receiving means 2 ... Multiplexing / separating means 3 ... Video / audio reproducing means 4 ... Control means 5 ... Storage means 6 ... Remote control device 7 ... Remote control receiving section 8 ... Screen generating means 9 ... Combining means 10: Display means 51: Wide broadcast screen configuration 52: Normal broadcast screen configuration 53: Non-image area 54: Wide screen 55: Partial on-screen display (channel number) 56: Pseudo image

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshikazu Hirai 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (3)

[Claims] 1. A means for generating and adding a pseudo image to a non-picture area when a received television broadcast is a letterbox format wide screen with a non-picture section and is in a partial on-screen display mode. A broadcast receiving device characterized by the above. 2. The broadcast receiving apparatus according to claim 1, further comprising means for stopping the generation of the pseudo video when the partial on-screen display mode is released. 3. The generation position of the partial on-screen display is within the area of the video signal of the wide broadcast when the received television broadcast is a letterbox type wide screen with a non-picture part and is in the partial on-screen display mode. A broadcast receiving apparatus, characterized in that it is provided with a means for moving it to another location.